Foldable: Folds up easy to carry Technology: Digital PLL， transmission is stable in different environments. Powered by rechargeable built-in lithium battery， No need for extra power supply LCD Display: Intuitive to tuning frequency with LCD screen Compatibility: Compatible with most smart phones\MP3\MP4 players， and device with 3.5mm jack Save present frequency when power off About PLAY X STORE All products sold in PLAY X STORE are shipped in 1 or 17 days from CHINA to USA Goods will arrive in 7-20 days， more than 30 days to support the Refund Technology Features 1. Built with Digital PLL， support high fidelity stereo， stable in different environments. 2. LCD display with blue backlight， more intuitive to tune frequency 3. Full channels on 88.1MHz - 107.9 MHz， more choice to you 4. Built in lithium battery， no need for extra power supply. Can save present frequency when power off. 5. Charge with Micro USB 5V， either normal phone charger or car charger. 6. Battery Status Indictor. Compatible modes: iPod/iPad/iPhone 6plus 6 5s 5c 5 4s and other IOS devices Samsung Galaxy S3 S4 S5 Note II III， HTC ONE M7 M8， Nokia， LG， Nexus， Motorola and more Android smart phones MP3， MP4 Players， All other devices with 3.5mm audio output Directions for use: 1.Please fully charge the transmitter. 2.Plug the transmitter into your phone and turn on the power switch. 3.Set a proper frequency on the transmitter， but avoid similar frequency with local radio station. 4.Turn on your car radio and tune the frequency to the same as on the transmitter. 5.Play music on your phone， then you can enjoy music on your radio and free your hands. Package Include 1x FM Transmitter 1x User Manual 1x Car Charger Note For good connection， you may need to take off your phone case， which differs from models， please make sure about that before check out.